Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 8 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/06/2021   06:50:35   (  -0.12, -75.24) (   0.37, -77.43)  249.62                80
 08/07/2021   06:28:57   (  -0.12, -75.26) (  -0.69, -72.85)  275.79                80
 08/08/2021   18:50:33   (   0.13, -75.31) (  -0.49, -78.05)  313.11                80
 08/09/2021   18:34:15   (   0.13, -75.33) (   0.57, -73.47)  212.89                80
 08/11/2021   06:55:42   (  -0.13, -75.36) (   0.61, -78.64)  373.95                80
 08/12/2021   06:34:05   (  -0.13, -75.39) (  -0.44, -74.06)  152.23                80
 08/13/2021   18:55:40   (   0.14, -75.44) (  -0.73, -79.26)  435.82                80
 08/14/2021   18:39:23   (   0.14, -75.47) (   0.33, -74.68)   90.74                80
 08/16/2021   07:00:50   (  -0.15, -75.51) (   0.85, -79.85)  495.31                80
 08/17/2021   06:39:13   (  -0.14, -75.54) (  -0.20, -75.27)   31.00                80